Calculating-machine attachment.



C. F. HOZIEH.

CALCULATING MACHINE ATTACHMENT. APPLICATION r||.n.0cT. 22. 1917.

1,291,525. Patented Jan. 14-, 1919.

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2 \l i s A? W2 T \M INVENTOR WTTNESSES ATTORNEY an; uamm In c. F. HO'ZIER.

CALCULATING MACHINE ATTACHMENT.

APPLICATION man ocr. 22. 1911.

1,291,525.- Patented Jan. 14, 1919.

2 SHEETS-SHEET 2- INVENTOR WITNESSES ATTORNEY m: muuu: raw cmnmmurna. vunmovcu n c assembly will cHAaLEs E. HOZIER, o'r MEMP-HIs, TENNESSEE.

CALCULATING-MACHINE ATTACHMENT.

Application filed October 22, 1917.

To all whom it may concern:

Be it known that I, CHARLES F. Hozrnn, a citizen of the United States, residing at Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Calculating-Machine Attachments, of which the following is a specification.

This invention relates to a calculating.

machine wherein the foot of the operator is employed in place of the hand for imparting motion to the registering mechanism.

One object of the invention is to provide a pedal mechanism 'adapted to translate rectilinear motion into rotary motion by employing a rack and pinion.

Another object is to provide a calculating machine with a pedal operated mechanism to rotate the registering device and thus avoid the use of a hand operated crank so that both hands of the operator may be free for striking the keys.

A further object is to provide a pedal loosely connected to a vertical rod and having springs to return and maintain the parts in their, normal position.

A still further object is to provide a brace that may also serve as a guide for the rod, which is readily attached and detached from the tripod supporting the calculator.

Broadly stated the invention comprises a vertically positioned rod having at its upper end a rack adapted to cooperate with a pinion which is secured to the operating shaft of a calculating machine, a housing through which passes the rod and rack. a spring in the housing and cooperating with the rod, a brace serving as a guide for the rod, a pedal connected to the lower end of the rod, and a spring-for said pedal.

One practical form of construction and be described and illustrated in the accompanying drawings, in which Figure 1 is a side elevation of a calculating machine mounted upon a tripod with the attachment in operative position relative thereto,

Fig. 2 is a sectional of Fig. 1, i

Fig. 3 is a sectional view on the line 3-3 of Fig. 1, and

Fig. 4: is an enlarged detail showing the mounting of the pedal.

In the preferred embodiment about to be described the calculating machine may be view on the line 2-2 Specification of Letters Patent.

' Patented Jan. 14, 191.9.

Serial No. 197,940.

generally indicated at A. This machine may be of any usual or customary type that is ordinarily provided with a handle for rotating the shaft for the registering devices. The shaft 5 usually extends transversely of the machine and in the present showing is provided with a pinion 6.

The machine A may be supported upon a stand B having the usual top O. The top C may be connected to the standard D that is adapted to telescope within the sleeve section E. To hold the standard D in its proper position a set screw The sleeve section E is provided with a tripod having the legs 8. 9, and 10. The legs 8, 9, and 10 are preferably spaced at equal distances from each other and may he provided at their outer ends with suitable casters 11 or any other similar devices that will permit the stand and the machine to be readily moved from place to place.

The base of the machine A may have socured to it a cylindrical housing 12 that is provided with the flanges 13 and 14. The flanges serve to carry the screws 15 that are adapted to secure the housing and flanges to the machine. The housing is preferably secured adjacent the lower right hand side of the machine and the pinion 6. The housing is constructed to have avertioal rod 16 passed therethrough, which rod carries at its upper end a rack 17. The rack 17 is formed in the usual manner and its teeth are adapted to engage with the teeth of the pinion 6.

The housing 19. is sufficiently large in its interior diameter to accommodate a spiral spring 18. The spring is adapted to encircle the vertical. rod 16. This spring serves to maintain therack at the upper limit of its travel and when the rack is pulled'down the spring will act to move it upward again.

The lower end of the rod'16 is formed to have a more or less loose connection with a pedal 19. The lower end of the rod may be provided with an eye 20 through which is adapted to pass a pin 21 having the head 22. The pin 21 may be provided with a flat section 23 in which are formed suitable holes 2 1. The pedal may be also provided with holes which are in alinement with holes 24-. Any suitable fastening means may be passed through the several holes so as to secure the pedal to the pin 21. The pin being loosely connected by means of the relatively large size of the eye 20 will 7 is employed.

permit slight variations of up and down its forward end with the movement of the rod to be accommodated.

The pedal 19 is preferably connected at pin 21 while its rear or heel end is adapted to engage with the arm 25 which extends outward from the bracket which is generally indicated at 26. The bracket 26 is preferably formed as a semi-circle and its two free ends are adapted to rest upon the floor indicated at 27. At a suitable point the bracket 26 may be secured to the leg 10-one fastening means being indicated by the bolt 28. As shown the arm 25 extends tangentially from the bracket 26 and is provided at its outer end with a head 29.

Mounted upon the arm 25 is a spring 30. The spring is so mounted with relation to the arm that it serves to act upon the pedal to force the toe end upward. The normal position of the pedal being shown in Figs. 1 and 4. In order to maintain the substantial alinement of the vertical rod 16, the leg 10 of the tripod is engaged by a brace that is substantially H-shaped. This brace is composed of the spaced legs 31 and 32 which are provided with hooked ends 33 and 34.

The opposite side of the brace is formed with a web 35 that joins the legs 31 and 32 to form a unitary structure. The web 35 may be provided with a suitable hole through which passes the vertical rod 16. The brace is thus adapted to be secured upon the leg 10 in the usual manner by a wedging action. The hole in the Web 35 serves as a bearing and is preferably in alinement with a hole formed in the bottom of the housing 12.

In theassembled devices as shown in Fig. 1 the rack being in engagement with the pinion 6 any movement of the vertical or operating rod 16 will tend to rotate the pinion 6 and therefrom the shaft 5. It is usual in most types of calculating machines to operate a handle in order to cause the several registering dials to indicate. With this device the use of a handle is avoided and the operator employs the foot instead of the hand. This will leave both hands for more and quicker work in the operation of the keys. When it is desired to operate the shaft 5, the pedal 19 is pushed downward by the toe portion of the operators foot, which then draws down the rod 16 causing the rack 17 to rotate the pinion 6. As the pedal connection with the rod 16 is sufficiently loose, a the movement of the rod will be in substantially a straight line and the path of movement of the pedal will be compensated by such loose connection. The several springs serve to restore the several parts to their normalposition ready for the next depres sion of the pedal 19.

Uiat I claim is:

1. The combination of a calculating machine, and a stand therefor, a pinion on the shaft for the registering devices, a rack in operative connection therewith, a pedal operatively secured to the base of the stand, a rod to connect said pedal with the rack, a plurality of spring means serving to normally position the several parts, and a housing for inclosing one of the springs and serving to guide the rod and rack during their movements through the housing.

2. The combination with a calculating machine and a stand therefor, of a pinion on the shaft for the registering devices, a pedal detachably secured to the stand, a spring for the pedal, a rod connected with the pedal and having a vertically movable rack secured at its upper end, said rack serving to impart a rotary motion to the shaft by rotating said pinion, and a housing having a spring therein and encircling the rod, the ends of the housing serving to guide the rod and rack in a vertical direction.

3. The combination with a calculating machine and a stand therefor, of a pinion on the shaft for the registering to cooperate with the pinion and carried at the upper end of a vertically positioned rod, a pedal loosely connected with the lower end of the rod, a brace for retaining and guiding the rod, said brace being detachably secured to the stand, a housing through which said rod passes, a spring therein and surrounding said rod said spring serving to impart a downward movement to the rod, a frame for supporting the heel end of said pedal, and a spring operatively connected to the pedal and cooperating therewith and the rod and the other spring to restore the rack to its normal position.

In testimony whereof I affix in presence of two witneses.

CHARLES F. HOZIER.

my signature Witnesses:

R. R. CARRINGTON, J. F. DICKINSON.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

Washington, D. 0.

devices, a rack 

